What you're describing is not really routing if they're all on the same subnet. Can I ask what you're trying to accomplish? There's (likely) a different/better way to achieve what you're trying to do.
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gravyfaceNov 28 '10 at 3:09

If the IPs have the same 192.168.1.0/24 prefix does not always mean they are in the same VLAN. You can have PPP interfaces with /32 prefixes.
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Mircea VutcoviciNov 28 '10 at 4:42